CVE-2023-42447 blurhash panics on parsing crafted inputs

2023-09-1914:57:16

CWE-392

CWE-248

CWE-1284

GitHub_M

www.cve.org

cve-2023-42447

blurhash

panic

crafted inputs

version 0.2.0

utf-8

patch

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.001

Percentile

33.0%

JSON

blurhash-rs is a pure Rust implementation of Blurhash, software for encoding images into ASCII strings that can be turned into a gradient of colors representing the original image. In version 0.1.1, the blurhash parsing code may panic due to multiple panic-guarded out-of-bounds accesses on untrusted input. In a typical deployment, this may get triggered by feeding a maliciously crafted blurhashes over the network. These may include UTF-8 compliant strings containing multi-byte UTF-8 characters. A patch is available in version 0.2.0, which requires user intervention because of slight API churn. No known workarounds are available.

CNA Affected

[
  {
    "vendor": "whisperfish",
    "product": "blurhash-rs",
    "versions": [
      {
        "version": "= 0.1.1",
        "status": "affected"
      }
    ]
  }
]